摘要:
A grid has a grid structure (11) made of acid proof synthetic resin. A grid rib structure constitutes the grid structure and part of the grid rib structure inclusive of at least a connector lug (12) and a portion contiguous thereto is immersed in molten lead or lead alloy to form a lead or lead alloy film (16) coated on the grid structure. The portion to be coated with the lead or lead alloy film includes part of a frame rib (13) and an active material support rib (14, 15) which constitute the grid rib structure, and the active material support rib constituting the grid mesh is partly cut off (18) to enhance the coating of the lead or lead alloy film, the reduction in weight of the grid and ease of working for the coating of the lead or lead alloy film on the grid structure.
摘要:
This invention provides a lead battery that becomes usable by injecting an electrolyte thereinto. The battery includes: positive and negative electrode plates each having a grid comprising a Pb—Ca based alloy; separators that separate the positive electrode plates from the negative electrode plates; the electrolyte comprising sulfuric acid; and a battery container accommodating the positive and negative electrode plates, the separators, and the electrolyte. The battery container is sealed, and part of the positive and negative electrode plates is immersed in the electrolyte. The height Y0 of the positive and negative electrode plates and the distance Y1 from the bottom of the positive and negative electrode plates to the level of the electrolyte satisfy the relation: 15≦Y1/Y0×100≦60.
摘要:
This invention provides a lead battery that becomes usable by injecting an electrolyte thereinto. The battery includes: positive and negative electrode plates each having a grid comprising a Pb—Ca based alloy; separators that separate the positive electrode plates from the negative electrode plates; the electrolyte comprising sulfuric acid; and a battery container accommodating the positive and negative electrode plates, the separators, and the electrolyte. The battery container is sealed, and part of the positive and negative electrode plates is immersed in the electrolyte. The height Y0 of the positive and negative electrode plates and the distance Y1 from the bottom of the positive and negative electrode plates to the level of the electrolyte satisfy the relation: 15≦Y1/Y0×100≦60.
摘要:
A liquid-inlet cap (13) is installed in a liquid inlet (11) provided in a battery casing, the liquid-inlet cap (13) having a ventilating hole (12) for expelling a gas from the inside of a battery to the outside of the battery. A control valve section (21) is installed inside a cylindrical body (20) of the liquid-inlet cap (13) separately from the cylindrical body (20) and responds to the internal pressure of the battery to form a ventilating passage from a vent hole (22) provided on one end to a ventilating opening (28) provided on the other end.
摘要:
The present invention provides a process for producing a grid for use in lead acid batteries which comprises superposing a sheet or a foil of a lead alloy on a sheet bar composed of a lead-calcium alloy, said sheet or foil of lead alloy having a composition different from that of the sheet bar and having a thickness smaller than that of the sheet bar, followed by integrating the two materials by cold rolling process to form an elementary sheet and then subjecting the elementary sheet to an expanding or punching processing.The grid obtained according to this process is improved in the charging recovery characteristics after standing in a superdischarged state and in the corrosion resistance of grid at high temperatures without deteriorating the maintenance-free characteristics of the lead-calcium alloy itself.
摘要:
The present invention provides a process for producing a grid for use in lead acid batteries which comprises superposing, on a sheet bar of a lead-calcium alloy, a sheet or a foil of a lead-silver-tin alloy consisting of 0.01-1.0% by weight of tin and a residual quantity of lead and having a thickness smaller than that of the sheet bar, pressure-bonding both the materials by cold rolling to prepare an elementary sheet, and subjecting the elementary sheet to an expanding process or a punching process.The grid obtained according to the process of the invention is improved in the charge-discovery characteristics after overdischarging and standing and does not deteriorate the maintenance-free characteristic of lead-calcium-tin alloy.
摘要:
A process of forming an integrated circuit containing a bipolar transistor and an MOS transistor, by forming a base layer of the bipolar transistor using a non-selective epitaxial process so that the base layer has a single crystalline region on a collector active area and a polycrystalline region on adjacent field oxide, and concurrently implanting the MOS gate layer and the polycrystalline region of the base layer, so that the base-collector junction extends into the substrate less than one-third of the depth of the field oxide, and vertically cumulative doping density of the polycrystalline region of the base layer is between 80 percent and 125 percent of a vertically cumulative doping density of the MOS gate. An integrated circuit containing a bipolar transistor and an MOS transistor formed by the described process.
摘要:
A method for fabricating a semiconductor device having a first and second bipolar devices of the same dopant type includes: depositing a dielectric layer over a semiconductor layer, depositing a gate conductor layer over the dielectric layer, defining base regions of both bipolar devices, removing the gate conductor layer and dielectric layer in the base regions, depositing a base layer on the gate conductor layer and on the exposed semiconductor layer in the base regions, depositing an insulating layer over the base layer, forming a photoresist layer and defining emitter regions of both bipolar devices, removing the photoresist layer in the emitter regions thereby forming two emitter windows, masking the emitter window of the first bipolar device and exposing the base layer in the base region of the second bipolar device to an additional emitter implant through the associated emitter window.
摘要:
A multi-column electron beam exposure apparatus includes: a plurality of column cells; a wafer stage including an electron-beam-property detecting unit for measuring an electron beam property; and a controller for measuring beam properties of electron beams used in all the column cells by using the electron-beam-property detecting unit, and for adjusting the electron beams of the respective column cells so that the properties of the electron beams used in the column cells may be approximately identical. The electron beam property may be any of a beam position, a beam intensity, and a beam shape of the electron beam to be emitted. The electron-beam-property detecting unit may be a chip for calibration with a reference mark formed thereon or a Faraday cup.
摘要:
An electron beam lithography apparatus includes a storage for storing data on a drawing pattern assigned a rank based on an accuracy required for a device pattern, a drawing pattern adjustment unit to generate data on divided drawing patterns based on the rank, a settlement wait time adjustment unit to determine a settlement wait time based on the rank, and a controller to draw the device pattern while irradiating an electron beam based on the data on the divided drawing patterns and the settlement wait time. The drawing pattern adjustment unit determines upper limits on the long-side length of a divided drawing pattern or on the area of the divided drawing pattern based on the rank, and divides the drawing pattern based on the upper limits.